Xie Jianguang

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Questions related from Xie Jianguang

Dear， How to define sexual spore?

I found it very difficult to define it precisely. Microspore and megaspore of ferns or seed plants are sexual spore? Because the fertilization happened for a long time before the formation of...

28 April 2024 3,045 0 View

How can we explain that the year reported is not consistent with the geological time scale?

When I read some articles, I found the time was not consistent to the geological time scale. For example, In the Article Archaefructaceae, a new basal angiosperm family　( Sun G, 2002), the fossil...

15 December 2015 5,619 5 View